<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>Document</title>
</head>
<body>
    <script>
        var person ={
            name:'张山',
            age:18,
            fav:function(){

            },
            // 等同于下面
            fav2(){
                console.log(this)
                
            }
        }    
        person.fav2(this)
    </script>
</body>
</html>